| /* |
| * Copyright (c) 2011 Google Inc. |
| * |
| * All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse |
| * Public License v1.0 which accompanies this distribution, and is available at |
| * |
| * http://www.eclipse.org/legal/epl-v10.html |
| */ |
| package com.google.eclipse.protobuf.validation; |
| |
| import static org.eclipse.xtext.diagnostics.Diagnostic.SYNTAX_DIAGNOSTIC; |
| |
| import static com.google.eclipse.protobuf.validation.Messages.expectedFieldName; |
| import static com.google.eclipse.protobuf.validation.Messages.missingFieldNumber; |
| |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.xtext.nodemodel.SyntaxErrorMessage; |
| import org.eclipse.xtext.parser.antlr.SyntaxErrorMessageProvider; |
| |
| import com.google.eclipse.protobuf.protobuf.MessageField; |
| |
| /** |
| * Messages for syntax errors. |
| * |
| * @author alruiz@google.com (Alex Ruiz) |
| */ |
| public class ProtobufSyntaxErrorMessageProvider extends SyntaxErrorMessageProvider { |
| @Override public SyntaxErrorMessage getSyntaxErrorMessage(IParserErrorContext context) { |
| String message = context.getDefaultMessage(); |
| EObject currentContext = context.getCurrentContext(); |
| if (currentContext instanceof MessageField) { |
| message = mapToProtocMessage(message, (MessageField) currentContext); |
| } |
| return new SyntaxErrorMessage(message, SYNTAX_DIAGNOSTIC); |
| } |
| |
| private String mapToProtocMessage(String message, MessageField field) { |
| if (message.contains("RULE_ID") && field.getName() == null) { |
| return expectedFieldName; |
| } |
| if (message.equals("mismatched input ';' expecting '='") && field.getIndex() == 0) { |
| return missingFieldNumber; |
| } |
| return message; |
| } |
| } |